The goal is to ensure quality for a period of time after you buy it. That can be several days to several weeks, depending on the item. For instance, milk, assuming proper refrigeration, should last five to seven days past its sell-by date before turning sour.
An autoencoder is a neural network that is trained in an unsupervised fashion. The goal of an autoencoder is to find a more compact representation of the data by learning an encoder, which transforms the data to their corresponding compact representation, and a decoder, which reconstructs the original data.
Answer Wiki. Auto-tune is a piece of recording equipment and software that analyzes a vocal recording, and makes changes to the pitch of the voice. The technology was originally developed for Exxon (the oil/energy titan). In the context of prospecting for that industry, this technology was able to clean up seismic data.